00250nam a22001097a 4500 621.381528 BAR'T BARNES, L 80493 TRANSISTORS FOR TECHNICAL COLLEGE LONDON ILIFFE 1965 194P BK 585418 585418 0 0 0 0 CEME CEME GEN 2017-07-07 0 621.381528 BAR'T CEME-5089 2021-06-28 2021-06-28 BK